Question

Find the sum of all natural numbers from 1 to 1000​

Answer 1

Answer:

So the sum of the terms from 1 to 1000 is 500500.

Answer 2

Answer:

Sum of integers from 1 to 1000 is 500500.

Step-by-step explanation:

Formula : S= n/2[2a + (n − 1) × d]

First term (a )= 1

Common difference = 2- 1 = 1

And number n = 1000

Let's calculate the sum of the natural numbers 1 to 1000

The sum of an A.P,

S = n/2[2a + (n − 1) × d]

S = 1000/2[2 + (1000 – 1) × 1]

S = 500 [2 + 999]

S = 500 (1001)

S = 500500

So, Sum of integers from 1 to 1000 is 500500.